Look at this code:

function F() {
  function C() { 
    return this;
  } 
  return C();
} 
var o = new F(); 

The value of this refers to the global object or the object o?

What's the result of executing this piece of code?

function C(){ 
  this.a = 1;
  return false; 
}
console.log(typeof new C());

What's the result of executing the following piece of code?

>>> c = [1, 2, [1, 2]];
>>> c.sort();
>>> c.join('--'); 
>>> console.log(c); 

Imagine the String() constructor didn't exist. Create a constructor function MyString() that acts like String() as closely as possible. You're not allowed to use any built-in string methods or properties, and remember that String() doesn't exist. You can use this code to test your constructor:

>>> var s = new MyString('hello');
>>> s.length;

5

>>> s[0];

"h"

>>> s.toString();

"hello"

>>> s.valueOf();

"hello"

>>> s.charAt(1);

"e"

>>&gt...